US20060260365A1 - Weft knitting machine with movable yarn guide member - Google Patents
Weft knitting machine with movable yarn guide member Download PDFInfo
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- US20060260365A1 US20060260365A1 US10/569,264 US56926406A US2006260365A1 US 20060260365 A1 US20060260365 A1 US 20060260365A1 US 56926406 A US56926406 A US 56926406A US 2006260365 A1 US2006260365 A1 US 2006260365A1
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- Prior art keywords
- guide member
- yarn guide
- cam
- stitch
- carriage
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/32—Cam systems or assemblies for operating knitting instruments
- D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/06—Sinkers
Definitions
- the present invention relates to a weft knitting machine having a yarn guide member, and more specifically to a weft knitting machine having a movable yarn guide member whose advancing and retreating operation for the yarn guide member is enabled.
- a weft knitting machine provided with a yarn guide member for guiding yarn to a predetermined lower position so that the yarn fed from a yarn feeder is securely hooked by a knitting needle advanced to a gap portion between mouth portions by means of a knitting cam of a carriage is known.
- needle beds are disposed in a backward-and-forward direction in a state of confronting the mouth portion.
- Patent Document 1 Japanese Examined Patent Application Publication No. 6-72347
- a driving device that drives a yarn guide member is configured such that the yarn guide member instantaneously retreats to the needle bed side from the mouth portion linking with an advancing movement of a stitch presser only when the stitch presser advances to a gap portion between mouth portions by means of a driving motor mounted on a carriage. Accordingly, the yarn guide member staying in a specific zone where the carriage passes by cannot be appropriately kept in a state being retreated from the gap portion between the mouth portions to the needle bed side.
- the present invention is proposed in light of the above described problems, and an object of the present invention is to keep a state in which the yarn guide member is retreating from the gap portion between the mouth portions by means of a simple structure without constructing the carriage to be large sized.
- a weft knitting machine having a movable yarn guide member of the present invention is most mainly characterized in that in the movable yarn guide member, a needle plate is disposed on a needle bed at an even interval; the needle bed disposed side by side between each of the needle plates for a knitting needle to be able to be operated for advancing and retreating by a carriage are disposed in a backward-and-forward direction in a state of confronting the mouth portion thereof; the carriage for sliding the knitting needle to advance and retreat is provided to be able to run on each of the needle beds; and the yarn guide member for guiding yarn fed from a yarn feeder to a predetermined position is provided to be able to advance and retreat in the mouth portion, in which a stitch cam for setting a density of a knit by drawing in a knitting needle holding the yarn fed from the yarn feeder is provided in the carriage in a manner so as to be able to adjust the density of the knit, and in which the stitch cam and the yarn guide member are connected by means of
- the weft knitting machine having a movable yarn guide member in the present invention is characterized in that either one of a pair of a left and a right stitch cams provided on the carriage and a yarn guide member are connected to each other by means of the linking device;
- the linking device includes a groove cam formed on the stitch cam, an operating bellcrank operated for a swinging movement by engaging one end thereof with the groove cam, a swinging arm whose one end is connected to the other end of the operating bellcrank and a middle portion thereof is pivotably supported by a rotation shaft, and a yarn guide member control cam being operated for rising and lowering movement by the other end of the swinging arm; or the stitch cam is configured to be able to be operated for rising and lowering movement by a driving device provided at a portion out of the carriage.
- a weft knitting machine having a movable yarn guide member of the present invention is configured such that a stitch cam for setting a density of a knit by drawing in a knitting needle holding the yarn fed from the yarn feeder is provided in the carriage in a manner so as to be able to adjust the density of the knit, and the stitch cam and the yarn guide member are connected by means of a linking device in a manner such that when the stitch cam moves to a knit-forming side for forming the knit, the movable yarn guide member moves in a direction to advance to a side of a gap portion between the mouth portions, and when the stitch cam moves to a stitch-cam-intermitting side, or a value of the density of the knit is zero, where the knit is not formed, the movable yarn guide member moves in a direction to be retreated from the gap portion between the mouth portions to a needle bed side.
- the yarn guide member can be advanced to the gap portion between the mouth portions.
- the yarn guide member can be retreated from the gap portion between the mouth portions to the needle bed side and can be held the state. Thereby, space for appropriately disposing a knitting work assisting member for automatically inserting unused end yarn produced at the beginning of and the end of knitting into the knit can be secured.
- a pair of the left and right stitch cams mounted on the carriage is configured to be individually operable for rising and lowering by means of a driving device mounted on the carriage.
- Either one of the left and right stitch cams is connected to the yarn guide member by means of a connecting device so that the yarn guide member can be advanced or retreated in accordance with a position of either one of the left and right stitch cams. Since the stitch cam is set to a sliding direction of the carriage to either a precedent side (a side at which the knit is not formed) or a succeeding side (a side at which the knit is formed) at a time of knitting, the space is effectively utilized. Accordingly, smaller and lighter carriages can be realized.
- FIG. 1 is a side elevation showing a schematic construction of a mouth portion of the weft knitting machine.
- a numeral 1 in FIG. 1 , denotes an entire structure of the weft knitting machine.
- the weft knitting machine 1 is provided with a carriage 6 , shown in FIG. 2 , at an upper part of the needle bed 2 . Needle plates 3 are disposed on the needle bed 2 at even intervals.
- a plurality of knitting needles 4 of a compound needle-type and yarn guide members 5 are respectively disposed side by side between the needle plates, 3 and 3 , in a manner so as to be able to operate for advancing and retreating.
- a pair of the needle beds 2 is configured to face each other in a manner such that each of the mouth portions of the knitting needles 4 comes close together in an upside-down-V like form as shown in the side elevation in FIG. 1 .
- a movable sinker 7 operated for swinging by means of the carriage 6 is disposed at a tip end portion of the needle bed 2 .
- a gap portion T between the mouth portions is formed between each of the mouth portions of the needle plates, 3 and 3 .
- a knitting needle 4 and the yarn guide member 5 of both of the needle beds 2 are configured to be operated for advancing and retreating by means of a cam group or the like in the carriage 6 .
- FIG. 2 is a development elevation schematically showing the cam group mounted on the carriage 6 so as to knit the knit by being operated for advancing and retreating the knitting needle 4 of the needle bed 2 .
- a numeral 8 denotes a knitting cam
- a numeral 9 denotes a yarn guide member control cam that controls the advancing and retreating movement of the yarn guide member 5 .
- a numeral 10 denotes a linking device for linking the yarn guide member control cam 9 with a movement of a stitch cam 13 , described later.
- the yarn guide member 5 is a member whose tip end portion is positioned in the vicinity of a tip end of a hook 4 a of the knitting needle 4 .
- a guide face 5 b for guiding the yarn to a predetermined position when the yarn guide member 5 is advanced to the gap portion T between the mouth portions is formed at a lower face of a tip end of the yarn guide member.
- a bat 5 d that hooks with a groove cam 9 a of the yarn guide member control cam 9 is formed on an operation rod 5 c extending toward a side of the cam group of the carriage 6 (Refer to FIG. 3 ).
- a knitting cam 8 is provided with a needle raising cam 11 having an angular shape, a guard cam 12 disposed on a center of an upper part of the needle raising cam 11 , and the stitch cams, 13 and 13 , slidably provided at both sides of the guard cam 12 along a side face thereof.
- a cam orbit 15 where a bat 14 of the knitting needle 4 passes through is constructed between the needle raising cam 11 and the guard cam 12 , and between the stitch cam, 13 and 13 (Refer to FIG. 2 ).
- Each of Sliding holes 16 are pierced in a cam plate 6 a of the carriage 6 in an upside-down-V like form, as shown in the side elevation in FIG. 2 , and respective sliding members, 17 a and 17 b , are slidably fitted into each of the sliding holes, 16 and 16 . Further, both the stitch cams 13 are attached to a rear face side (needle bed side) of the sliding members, 17 a and 17 b.
- a pin 19 to which a link 18 for setting the density of the knit, described later, is connected is implanted at a surface side portion (inner side of the carriage) of the sliding members, 17 a and 17 b .
- One end of a spring 20 for pulling down the stitch cam is connected to a cam plate 6 a of the carriage 6 , and the other end of the spring 20 is connected to the hook 21 .
- the hook 21 is provided at a surface side portion of the sliding members, 17 a and 17 b .
- the stitch cam 13 is always kept under tension in a manner so as to be dragged downward by means of the tension of the spring 20 .
- the carriage 6 shown in FIG. 2 , is configured to slide from the right side to the left side in a direction indicated by an arrow A.
- the stitch cam 13 at the left side is the stitch cam 13 of a precedent side.
- the link 18 for setting the density of the knit operates each of the stitch cams 13 for rising and lowering, namely adjusts the density of the knit.
- the link 18 for setting the density of the knit is provided with an operation arm 22 , tip end of which is fitted into the aforementioned pin 19 , a swinging arm 24 that shares a supporting shaft 23 of the operation arm 22 , and rising and lowering rods, 25 a and 25 b , connected to a tip end of the swinging arm 24 .
- Both the left and right rising and lowering rods, 25 a and 25 b are configured such that rollers, 26 a and 26 b , attached to a lower end portion thereof are pressed up by means of two plates, 27 a and 27 b , for controlling the stitch cam, which are provided to a guide rail 35 (Refer to FIG. 1 ).
- the plates, 27 a and 27 b , for controlling the stitch cams are configured to be able to individually operate the left and right rising and lowering rods, 25 a and 25 b.
- a stepping motor being driven for rotation by a signal generated from a control device of a weft knitting machine is provided at an end portion of a needle bed, and a spiral groove cam is attached to a rotation shaft of the stepping motor.
- an end portion of the plate 27 for controlling the stitch cam is engaged with the spiral groove cam, and a slanting elongated hole is pierced in the plates, 27 a and 27 b , for controlling the stitch cam.
- a pin provided in the guide rail 35 is fit into the elongated hole.
- the yarn guide member control cam 9 is configured to be movable for rising and lowering in upper and lower directions by means of being guided by a yarn guide member guide cam 37 fixed to a rear face side (needle bed side) of the cam plate 6 a , and the cam plate 6 a . Further, the groove cam 9 a being engaged with a bat 5 a of the yarn guide 5 is provided at a face of the needle bed side, and two of a fitting grooves 9 b being engaged with a linking device 10 , described later, are provided at a face of the cam plate 6 a side being spaced apart at a predetermined interval in a longitudinal direction.
- the linking device 10 for linking the yarn guide member control cam 9 with a movement of the stitch cam 13 is composed of swinging arms, 28 a and 28 b , for operating the yarn guide member control cam 9 for rising and lowering movement, in which the groove cam 9 a is formed, an L-shaped operating bellcrank 29 for swinging the swing arm 28 a by linking the precedent stitch cam 13 , and a cam groove 31 for linking the L-shaped operating bellcrank 29 with one of (left side in the figure) the stitch cam 13 , which is formed in a sliding member 17 a , as shown in FIGS. 2 through 4 .
- a middle portion of the aforementioned L-shaped operating bellcrank 29 which is bent over, is defined as a fulcrum 30 of a swinging movement.
- One end of the aforementioned L-shaped operating bellcrank 29 is engaged with the cam groove 31 formed at an upper part of a surface side of the sliding member 17 a of the stitch cam 13 via a cam roller 43 , and the other end of the same is connected to an upper end portion of a swinging arm 28 a (Refer to FIGS. 3 and 4 ).
- a middle portion of the swinging arm 28 a is pivotably supported by a rotation shaft 36 and a lower end portion of the swinging arm 28 a and a swinging arm 28 b of the other end side of the rotation shaft 36 are downwardly projected out from a penetrating groove of the cam plate 6 a of the carriage 6 .
- a tip end portion of the swinging arm 28 a is fit into a fitting groove 9 b provided at an upper face of the yarn guide member control cam 9 disposed in a manner so as to be movable for rising and lowering in the upper and lower direction at a rear face of the cam plate 6 a (needle bed side).
- a plate 27 a for controlling the stitch cam (not shown) is set to a predetermined height by a moving operation device preceding the sliding movement of the carriage 6 .
- the stitch cam 13 at the left side rises up to an intermitting position of the stitch cam where the knit is not formed via the rollers 26 a , the rising and lowering rod, 25 a , and the operation arm 22 .
- the operating bellcrank 29 swings along the same in a clockwise direction by means of the cam roller 43 sliding along the cam groove 31 formed at an upper end portion of a surface side of the sliding member 17 a.
- An engaging end of the swinging arm 28 a with the operating bellcrank 29 swings in an upward direction (mouth portion side) in the figure, around the rotation shaft 36 serving as a fulcrum by means of the swinging movement of the operating bellcrank 29 .
- a tip end of the swinging arm 28 b swings in a downward direction (opposite to the mouth portion side) in the figure, around the rotation shaft 36 serving as a fulcrum. Consequently, the yarn guide member control cam 9 is operated for moving in the downward direction, namely the direction for leaving from the mouth portion side in the figure.
- two courses can be set. That is, either one of a course in which the knitting is intermitting or a course that the stitch cam 13 at a side to be connected to 14 the linking device 10 serves as that of a precedent side can be set.
- the position can be arbitrary set via a roller 26 b , the rising and lowering rod 25 b , the operation arm 22 , and a sliding member 17 b , by means of a moving device of the plate 27 b for controlling the stitch cam (not shown).
- both the stitch cams, 13 and 13 are moved down to a predetermined knit density position via the rollers, 26 a and 26 b , the rising and lowering rods, 25 a and 25 b , and the operation arm 22 .
- the operating bellcrank 29 is rotated in a counterclockwise direction by means of the cam roller 43 sliding along the cam groove 31 formed at an upper end portion of a surface side of the sliding member 17 a with the lowering down movement of the precedent stitch cam 13 .
- the engaging end of the swinging arm 28 a with the operating bellcrank 29 swings in a downward direction (opposite to the mouth portion side) in the figure around the rotation shaft 36 as a fulcrum.
- tip ends of both of a lower end portion of the swinging arm 28 a and the swinging arm 28 b swing in an upward direction (mouth portion side) in the figure around the rotation shaft 36 as a fulcrum.
- the yarn guide member control cam 9 is operated to be moved in an upward direction in the figure, namely in a direction of the mouth portion side.
- the yarn guide member control cam 9 is operated without providing a specific driving mechanism or a control mechanism and a control of an advancing and a retreating operation for the yarn guide member 5 becomes possible.
- the stitch cam 13 at the left side and the yarn guide member control cam 9 are connected by means of the linking device 10 so that the yarn guide member 5 is operated.
- the yarn guide member 5 can be operated by means of connecting the yarn guide member 13 at the right side and the yarn guide member control cam 9 by the linking device 10 .
- FIG. 1 is a side elevation showing a schematic construction of a mouth portion of a weft knitting machine (first embodiment);
- FIG. 2 is a plan view showing a schematic construction of a portion of a cam group of a carriage (first embodiment);
- FIG. 3 is a side elevation showing a schematic construction of a portion of a linking device of a stitch cam and a yarn guide member (first embodiment);
- FIG. 4 is a cross-section along a line X-X of FIG. 2 (first embodiment);
- FIG. 5 is a plan view showing a schematic construction of the portion of the cam group when the yarn guide member is advanced to the mouth portion (first embodiment).
- FIG. 6 is a side elevation in a state that the yarn guide member is advanced to the mouth portion (first embodiment).
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Abstract
Description
- The present invention relates to a weft knitting machine having a yarn guide member, and more specifically to a weft knitting machine having a movable yarn guide member whose advancing and retreating operation for the yarn guide member is enabled.
- A weft knitting machine provided with a yarn guide member for guiding yarn to a predetermined lower position so that the yarn fed from a yarn feeder is securely hooked by a knitting needle advanced to a gap portion between mouth portions by means of a knitting cam of a carriage is known. In the weft knitting machine, needle beds are disposed in a backward-and-forward direction in a state of confronting the mouth portion.
- However, since space of the mouth portion where the yarn guide member is provided is narrow, there has been a possibility that a stitch presser interferes with the yarn guide member when the stitch presser is advanced to the gap portion between the mouth portions to press a stitch, for example.
- Accordingly, a weft knitting machine in which the yarn guide member is retreated to a needle bed side from the gap portion between the mouth portions by means of a driving device when the stitch presser advances to the gap portion between the mouth portions, and presses the stitch is known. Patent Document 1: Japanese Examined Patent Application Publication No. 6-72347
- A driving device that drives a yarn guide member is configured such that the yarn guide member instantaneously retreats to the needle bed side from the mouth portion linking with an advancing movement of a stitch presser only when the stitch presser advances to a gap portion between mouth portions by means of a driving motor mounted on a carriage. Accordingly, the yarn guide member staying in a specific zone where the carriage passes by cannot be appropriately kept in a state being retreated from the gap portion between the mouth portions to the needle bed side.
- Further, as described in Japanese Examined Patent Application Publication No. 6-72347, in the weft knitting machine where the driving motor for operating the yarn guide member via the stitch presser is mounted on the carriage, not only the size of the carriage increases but also mass increases as well. Further, since inertia caused by the carriage driven for a reciprocating movement increases, a driving device having high power is required. A problem occurs, in which the thus constructed weft knitting machine does not suit the knitting machines that repeat frequent reciprocating movement at high speed for producing knitting products, such as a glove, socks, or the like, having small knitting width.
- Furthermore, it is emphasized not only to produce the aforementioned knitting products, such as, the glove, the socks, or the like, but also to produce a product to be close to a complete product as close as possible on the knitting machine, resulting in work saving for the post-process. Accordingly, it becomes hard to secure space for appropriately disposing members to automatically catch and cut unused end yarn produced at the beginning of and/or end of knitting fingertips, or switching the yarn, and inserting the unused end yarn into the knit, or for appropriately disposing assistant members of knitting for the work saving, other than the above.
- The present invention is proposed in light of the above described problems, and an object of the present invention is to keep a state in which the yarn guide member is retreating from the gap portion between the mouth portions by means of a simple structure without constructing the carriage to be large sized.
- To achieve the above-described object, a weft knitting machine having a movable yarn guide member of the present invention is most mainly characterized in that in the movable yarn guide member, a needle plate is disposed on a needle bed at an even interval; the needle bed disposed side by side between each of the needle plates for a knitting needle to be able to be operated for advancing and retreating by a carriage are disposed in a backward-and-forward direction in a state of confronting the mouth portion thereof; the carriage for sliding the knitting needle to advance and retreat is provided to be able to run on each of the needle beds; and the yarn guide member for guiding yarn fed from a yarn feeder to a predetermined position is provided to be able to advance and retreat in the mouth portion, in which a stitch cam for setting a density of a knit by drawing in a knitting needle holding the yarn fed from the yarn feeder is provided in the carriage in a manner so as to be able to adjust the density of the knit, and in which the stitch cam and the yarn guide member are connected by means of a linking device in a manner such that when the stitch cam moves to a knit-forming side for forming the knit, the movable yarn guide member moves in a direction to advance to a side of a gap portion between the mouth portions, and when the stitch cam moves to a stitch-cam-intermitting side where the knit is not formed, the movable yarn guide member moves in a direction to be retreated from the gap portion between the mouth portions to a needle bed side.
- Further, the weft knitting machine having a movable yarn guide member in the present invention is characterized in that either one of a pair of a left and a right stitch cams provided on the carriage and a yarn guide member are connected to each other by means of the linking device; the linking device includes a groove cam formed on the stitch cam, an operating bellcrank operated for a swinging movement by engaging one end thereof with the groove cam, a swinging arm whose one end is connected to the other end of the operating bellcrank and a middle portion thereof is pivotably supported by a rotation shaft, and a yarn guide member control cam being operated for rising and lowering movement by the other end of the swinging arm; or the stitch cam is configured to be able to be operated for rising and lowering movement by a driving device provided at a portion out of the carriage.
- A weft knitting machine having a movable yarn guide member of the present invention is configured such that a stitch cam for setting a density of a knit by drawing in a knitting needle holding the yarn fed from the yarn feeder is provided in the carriage in a manner so as to be able to adjust the density of the knit, and the stitch cam and the yarn guide member are connected by means of a linking device in a manner such that when the stitch cam moves to a knit-forming side for forming the knit, the movable yarn guide member moves in a direction to advance to a side of a gap portion between the mouth portions, and when the stitch cam moves to a stitch-cam-intermitting side, or a value of the density of the knit is zero, where the knit is not formed, the movable yarn guide member moves in a direction to be retreated from the gap portion between the mouth portions to a needle bed side.
- Accordingly, at a time of knitting for forming the knit by adjusting the density of the knit by means of the stitch cam, the yarn guide member can be advanced to the gap portion between the mouth portions. On the other hand, at the stitch-cam-intermitting side where the knit is not formed by the stitch cam, namely when the stitch cam is moved to a state that the knit is not drawn in, the yarn guide member can be retreated from the gap portion between the mouth portions to the needle bed side and can be held the state. Thereby, space for appropriately disposing a knitting work assisting member for automatically inserting unused end yarn produced at the beginning of and the end of knitting into the knit can be secured.
- A pair of the left and right stitch cams mounted on the carriage is configured to be individually operable for rising and lowering by means of a driving device mounted on the carriage. Either one of the left and right stitch cams is connected to the yarn guide member by means of a connecting device so that the yarn guide member can be advanced or retreated in accordance with a position of either one of the left and right stitch cams. Since the stitch cam is set to a sliding direction of the carriage to either a precedent side (a side at which the knit is not formed) or a succeeding side (a side at which the knit is formed) at a time of knitting, the space is effectively utilized. Accordingly, smaller and lighter carriages can be realized.
- Hereinbelow, a weft knitting machine having a movable yarn guide member with respect to a first embodiment of the present invention is explained referring to the drawings.
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FIG. 1 is a side elevation showing a schematic construction of a mouth portion of the weft knitting machine. Anumeral 1, inFIG. 1 , denotes an entire structure of the weft knitting machine. Theweft knitting machine 1 is provided with acarriage 6, shown inFIG. 2 , at an upper part of theneedle bed 2.Needle plates 3 are disposed on theneedle bed 2 at even intervals. - A plurality of knitting
needles 4 of a compound needle-type andyarn guide members 5 are respectively disposed side by side between the needle plates, 3 and 3, in a manner so as to be able to operate for advancing and retreating. A pair of theneedle beds 2 is configured to face each other in a manner such that each of the mouth portions of the knittingneedles 4 comes close together in an upside-down-V like form as shown in the side elevation inFIG. 1 . - At a tip end portion of the
needle bed 2, amovable sinker 7 operated for swinging by means of thecarriage 6 is disposed. A gap portion T between the mouth portions is formed between each of the mouth portions of the needle plates, 3 and 3. A knittingneedle 4 and theyarn guide member 5 of both of theneedle beds 2 are configured to be operated for advancing and retreating by means of a cam group or the like in thecarriage 6. -
FIG. 2 is a development elevation schematically showing the cam group mounted on thecarriage 6 so as to knit the knit by being operated for advancing and retreating the knittingneedle 4 of theneedle bed 2. InFIG. 2 , anumeral 8 denotes a knitting cam, and anumeral 9 denotes a yarn guide member control cam that controls the advancing and retreating movement of theyarn guide member 5. In addition, anumeral 10 denotes a linking device for linking the yarn guidemember control cam 9 with a movement of astitch cam 13, described later. - The
yarn guide member 5 is a member whose tip end portion is positioned in the vicinity of a tip end of ahook 4 a of the knittingneedle 4. Aguide face 5 b for guiding the yarn to a predetermined position when theyarn guide member 5 is advanced to the gap portion T between the mouth portions is formed at a lower face of a tip end of the yarn guide member. Abat 5 d that hooks with agroove cam 9 a of the yarn guidemember control cam 9 is formed on anoperation rod 5 c extending toward a side of the cam group of the carriage 6 (Refer toFIG. 3 ). - A
knitting cam 8 is provided with aneedle raising cam 11 having an angular shape, aguard cam 12 disposed on a center of an upper part of theneedle raising cam 11, and the stitch cams, 13 and 13, slidably provided at both sides of theguard cam 12 along a side face thereof. Acam orbit 15 where abat 14 of the knittingneedle 4 passes through is constructed between theneedle raising cam 11 and theguard cam 12, and between the stitch cam, 13 and 13 (Refer toFIG. 2 ). - Each of
Sliding holes 16 are pierced in acam plate 6 a of thecarriage 6 in an upside-down-V like form, as shown in the side elevation inFIG. 2 , and respective sliding members, 17 a and 17 b, are slidably fitted into each of the sliding holes, 16 and 16. Further, both thestitch cams 13 are attached to a rear face side (needle bed side) of the sliding members, 17 a and 17 b. - Furthermore, a
pin 19 to which alink 18 for setting the density of the knit, described later, is connected is implanted at a surface side portion (inner side of the carriage) of the sliding members, 17 a and 17 b. One end of aspring 20 for pulling down the stitch cam is connected to acam plate 6 a of thecarriage 6, and the other end of thespring 20 is connected to thehook 21. Thehook 21 is provided at a surface side portion of the sliding members, 17 a and 17 b. In addition, thestitch cam 13 is always kept under tension in a manner so as to be dragged downward by means of the tension of thespring 20. - Further, the
carriage 6, shown inFIG. 2 , is configured to slide from the right side to the left side in a direction indicated by an arrow A. Thestitch cam 13 at the left side is thestitch cam 13 of a precedent side. - The
link 18 for setting the density of the knit operates each of thestitch cams 13 for rising and lowering, namely adjusts the density of the knit. Thelink 18 for setting the density of the knit is provided with anoperation arm 22, tip end of which is fitted into theaforementioned pin 19, a swingingarm 24 that shares a supportingshaft 23 of theoperation arm 22, and rising and lowering rods, 25 a and 25 b, connected to a tip end of the swingingarm 24. Both the left and right rising and lowering rods, 25 a and 25 b, are configured such that rollers, 26 a and 26 b, attached to a lower end portion thereof are pressed up by means of two plates, 27 a and 27 b, for controlling the stitch cam, which are provided to a guide rail 35 (Refer toFIG. 1 ). - Accordingly, the plates, 27 a and 27 b, for controlling the stitch cams are configured to be able to individually operate the left and right rising and lowering rods, 25 a and 25 b.
- Incidentally, although a moving and operating device of the plate 27 for controlling the stitch cam is not shown, for example, the moving and operating device having a structure described in the Japanese Unexamined Patent Application Publication No. 3-185161 is used.
- In other words, a stepping motor being driven for rotation by a signal generated from a control device of a weft knitting machine is provided at an end portion of a needle bed, and a spiral groove cam is attached to a rotation shaft of the stepping motor. In addition, an end portion of the plate 27 for controlling the stitch cam is engaged with the spiral groove cam, and a slanting elongated hole is pierced in the plates, 27 a and 27 b, for controlling the stitch cam. Further, a pin provided in the
guide rail 35 is fit into the elongated hole. Thereby the plates, 27 a and 27 b, for controlling the stitch cam are moved in a left and right direction. As a result, the height of the plates, 27 a and 27 b, for controlling the stitch cam is configured to be varied. - The yarn guide
member control cam 9 is configured to be movable for rising and lowering in upper and lower directions by means of being guided by a yarn guidemember guide cam 37 fixed to a rear face side (needle bed side) of thecam plate 6 a, and thecam plate 6 a. Further, thegroove cam 9 a being engaged with a bat 5 a of theyarn guide 5 is provided at a face of the needle bed side, and two of afitting grooves 9 b being engaged with a linkingdevice 10, described later, are provided at a face of thecam plate 6 a side being spaced apart at a predetermined interval in a longitudinal direction. - On the other hand, in the linking
device 10 for linking the yarn guidemember control cam 9 with a movement of thestitch cam 13 is composed of swinging arms, 28 a and 28 b, for operating the yarn guidemember control cam 9 for rising and lowering movement, in which thegroove cam 9 a is formed, an L-shapedoperating bellcrank 29 for swinging theswing arm 28 a by linking theprecedent stitch cam 13, and acam groove 31 for linking the L-shapedoperating bellcrank 29 with one of (left side in the figure) thestitch cam 13, which is formed in a slidingmember 17 a, as shown inFIGS. 2 through 4 . - A middle portion of the aforementioned L-shaped
operating bellcrank 29, which is bent over, is defined as afulcrum 30 of a swinging movement. One end of the aforementioned L-shapedoperating bellcrank 29 is engaged with thecam groove 31 formed at an upper part of a surface side of the slidingmember 17 a of thestitch cam 13 via acam roller 43, and the other end of the same is connected to an upper end portion of a swingingarm 28 a (Refer toFIGS. 3 and 4 ). - A middle portion of the swinging
arm 28 a is pivotably supported by arotation shaft 36 and a lower end portion of the swingingarm 28 a and a swingingarm 28 b of the other end side of therotation shaft 36 are downwardly projected out from a penetrating groove of thecam plate 6 a of thecarriage 6. A tip end portion of the swingingarm 28 a is fit into afitting groove 9 b provided at an upper face of the yarn guidemember control cam 9 disposed in a manner so as to be movable for rising and lowering in the upper and lower direction at a rear face of thecam plate 6 a (needle bed side). - A function of the weft knitting machine having a movable yarn guide member constructed above will be explained hereinbelow.
- As indicated by the arrow A in
FIG. 2 , when a state that theyarn guide member 5 is retreated from the gap portion between the mouth portions is held in a case when thecarriage 6 is sliding from the right to left, aplate 27 a for controlling the stitch cam (not shown) is set to a predetermined height by a moving operation device preceding the sliding movement of thecarriage 6. - When the
plate 27 a for controlling the stitch cam rises, thestitch cam 13 at the left side rises up to an intermitting position of the stitch cam where the knit is not formed via therollers 26 a, the rising and lowering rod, 25 a, and theoperation arm 22. - When the
stitch cam 13 at a precedent side rises, the operatingbellcrank 29 swings along the same in a clockwise direction by means of thecam roller 43 sliding along thecam groove 31 formed at an upper end portion of a surface side of the slidingmember 17 a. - An engaging end of the swinging
arm 28 a with the operatingbellcrank 29 swings in an upward direction (mouth portion side) in the figure, around therotation shaft 36 serving as a fulcrum by means of the swinging movement of theoperating bellcrank 29. A tip end of the swingingarm 28 b swings in a downward direction (opposite to the mouth portion side) in the figure, around therotation shaft 36 serving as a fulcrum. Consequently, the yarn guidemember control cam 9 is operated for moving in the downward direction, namely the direction for leaving from the mouth portion side in the figure. - Accordingly, when the
carriage 6 slides on theneedle bed 2 in a state that the yarn guidemember control cam 9 is downwardly moved, thebat 5 d engaging with thegroove cam 9 a of the yarnguide control cam 9 is pulled down. As a result, theyarn guide member 5 is brought to a state to be retreated from the gap portion T between the mouth portions, as shown inFIG. 3 and the gap portion T between the mouth portions is largely opened. - Accordingly, even when a
yarn insertion member 33 for treating the unused end yarn produced during the process of knitting performs relative movement to thecarriage 6, there is no possibility that theyarn insertion member 33 interferes with the tip end of theyarn guide member 5. - As described above, as for the course of the
carriage 6 that retreats theyarn guide member 5 from the gap portion T between the mouth portions to the side of theneedle bed 2, two courses can be set. That is, either one of a course in which the knitting is intermitting or a course that thestitch cam 13 at a side to be connected to 14 the linkingdevice 10 serves as that of a precedent side can be set. - There is no need to provide the linking
device 10 in thestitch cam 13 of the other side (posterior side), and the position can be arbitrary set via aroller 26 b, the rising and loweringrod 25 b, theoperation arm 22, and a slidingmember 17 b, by means of a moving device of theplate 27 b for controlling the stitch cam (not shown). - Next, as indicated by arrows, A and B, in
FIG. 5 , in a case when thecarriage 6 slides from the right to the left, or from the left to the right, and when both of the stitch cams, 13 and 13, are set to a knitting area, and further, theyarn guide member 5 is advanced to the gap portion T between the mouth portions, the plates, 27 a and 27 b, for controlling the stitch cam are moved down from a position, shown inFIG. 2 to a desired position, shown inFIG. 5 by means of a movement control device for moving the plates, 27 a and 27 b, for controlling the stitch cam (not shown). - When the plates, 27 a and 27 b, for controlling the stitch cam are moved down, both the stitch cams, 13 and 13, are moved down to a predetermined knit density position via the rollers, 26 a and 26 b, the rising and lowering rods, 25 a and 25 b, and the
operation arm 22. - When the
precedent stitch cam 13 is lowered (moved down), the operatingbellcrank 29 is rotated in a counterclockwise direction by means of thecam roller 43 sliding along thecam groove 31 formed at an upper end portion of a surface side of the slidingmember 17 a with the lowering down movement of theprecedent stitch cam 13. - Due to the swinging movement of the
operating bellcrank 29, the engaging end of the swingingarm 28 a with the operatingbellcrank 29 swings in a downward direction (opposite to the mouth portion side) in the figure around therotation shaft 36 as a fulcrum. In addition, tip ends of both of a lower end portion of the swingingarm 28 a and the swingingarm 28 b swing in an upward direction (mouth portion side) in the figure around therotation shaft 36 as a fulcrum. Thereby, the yarn guidemember control cam 9 is operated to be moved in an upward direction in the figure, namely in a direction of the mouth portion side. - Thus, when the
carriage 6 slides on theneedle bed 2 in a state that the yarn guidemember control cam 9 is moved upward, the bat 5 a engaging with thegroove cam 9 a of the yarn guidemember control cam 9 is upwardly pressed. Therefore, theyarn guide member 5 is brought to a state to be projected to the gap portion T between the mouth portions, shown inFIG. 6 , from the state, shown inFIG. 3 . - Accordingly, since yarn fed from a
yarn feeder 35 is guided to theguide face 5 b of a tip end and further guided to a position in the vicinity of a tip end of thehook 4 a of a knitting needle, even when thehook 4 a is closed by means of a slider that advances just afterward with a lowering movement of the knitting needle, the yarn is securely held by thehook 4 a, and thereafter, theknitting needle 4 is drawn in at a predetermined amount by thestitch cam 13. Thereby, knit having a predetermined knit density is formed. - As described above, by means of providing the
liking device 10 in thestitch cam 13 of one (left side in the embodiment) of the left and theright knitting cams 8 and utilizing the rising and lowering position of thestitch cam 13, the yarn guidemember control cam 9 is operated without providing a specific driving mechanism or a control mechanism and a control of an advancing and a retreating operation for theyarn guide member 5 becomes possible. - In addition, in the explanation described above, the
stitch cam 13 at the left side and the yarn guidemember control cam 9 are connected by means of the linkingdevice 10 so that theyarn guide member 5 is operated. However, without being limited such configurations, it is natural to say that theyarn guide member 5 can be operated by means of connecting theyarn guide member 13 at the right side and the yarn guidemember control cam 9 by the linkingdevice 10. -
FIG. 1 is a side elevation showing a schematic construction of a mouth portion of a weft knitting machine (first embodiment); -
FIG. 2 is a plan view showing a schematic construction of a portion of a cam group of a carriage (first embodiment); -
FIG. 3 is a side elevation showing a schematic construction of a portion of a linking device of a stitch cam and a yarn guide member (first embodiment); -
FIG. 4 is a cross-section along a line X-X ofFIG. 2 (first embodiment); -
FIG. 5 is a plan view showing a schematic construction of the portion of the cam group when the yarn guide member is advanced to the mouth portion (first embodiment); and -
FIG. 6 is a side elevation in a state that the yarn guide member is advanced to the mouth portion (first embodiment). -
- 1: weft knitting machine
- 2: needle bed
- 3: needle plate
- 4: knitting needle
- 5: yarn guide member
- 6: carriage
- 13: stitch cam
- 35: yarn feeder
- T: gap portion between mouth portions
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003309765 | 2003-09-02 | ||
JP2003309765A JP4015978B2 (en) | 2003-09-02 | 2003-09-02 | Flat knitting machine provided with movable yarn guide member |
PCT/JP2004/012097 WO2005024106A1 (en) | 2003-09-02 | 2004-08-24 | Weft knitting machine with movable yarn guide member |
Publications (2)
Publication Number | Publication Date |
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US20060260365A1 true US20060260365A1 (en) | 2006-11-23 |
US7207194B2 US7207194B2 (en) | 2007-04-24 |
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US10/569,264 Expired - Fee Related US7207194B2 (en) | 2003-09-02 | 2004-08-24 | Weft knitting machine with movable yarn guide member |
Country Status (7)
Country | Link |
---|---|
US (1) | US7207194B2 (en) |
EP (1) | EP1662032B1 (en) |
JP (1) | JP4015978B2 (en) |
KR (1) | KR101025153B1 (en) |
CN (1) | CN100554554C (en) |
DE (1) | DE602004023860D1 (en) |
WO (1) | WO2005024106A1 (en) |
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- 2004-08-24 WO PCT/JP2004/012097 patent/WO2005024106A1/en active Application Filing
- 2004-08-24 DE DE602004023860T patent/DE602004023860D1/en active Active
- 2004-08-24 US US10/569,264 patent/US7207194B2/en not_active Expired - Fee Related
- 2004-08-24 KR KR1020067003716A patent/KR101025153B1/en active IP Right Grant
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CN102234871A (en) * | 2010-04-22 | 2011-11-09 | H.斯托尔两合公司 | Triangle system for flat knitting machine |
US20150007451A1 (en) * | 2013-06-25 | 2015-01-08 | Nike, Inc. | Article of Footwear With Braided Upper |
US20180213878A1 (en) * | 2013-06-25 | 2018-08-02 | Nike, Inc. | Article of footwear with braided upper |
US11219266B2 (en) * | 2013-06-25 | 2022-01-11 | Nike, Inc. | Article of footwear with braided upper |
US10863794B2 (en) | 2013-06-25 | 2020-12-15 | Nike, Inc. | Article of footwear having multiple braided structures |
US10932528B2 (en) | 2014-12-10 | 2021-03-02 | Nike, Inc. | Last system for articles with braided components |
US10299544B2 (en) | 2014-12-10 | 2019-05-28 | Nike, Inc. | Last system for articles with braided components |
US10674791B2 (en) | 2014-12-10 | 2020-06-09 | Nike, Inc. | Braided article with internal midsole structure |
US11540596B2 (en) | 2014-12-10 | 2023-01-03 | Nike, Inc. | Last system for articles with braided components |
US10555581B2 (en) | 2015-05-26 | 2020-02-11 | Nike, Inc. | Braided upper with multiple materials |
US10743618B2 (en) | 2015-05-26 | 2020-08-18 | Nike, Inc. | Hybrid braided article |
US11103028B2 (en) | 2015-08-07 | 2021-08-31 | Nike, Inc. | Multi-layered braided article and method of making |
US11051573B2 (en) | 2017-05-31 | 2021-07-06 | Nike, Inc. | Braided articles and methods for their manufacture |
US11202483B2 (en) | 2017-05-31 | 2021-12-21 | Nike, Inc. | Braided articles and methods for their manufacture |
US10806210B2 (en) | 2017-05-31 | 2020-10-20 | Nike, Inc. | Braided articles and methods for their manufacture |
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Also Published As
Publication number | Publication date |
---|---|
CN100554554C (en) | 2009-10-28 |
DE602004023860D1 (en) | 2009-12-10 |
US7207194B2 (en) | 2007-04-24 |
JP2005076155A (en) | 2005-03-24 |
KR20060121821A (en) | 2006-11-29 |
CN1846022A (en) | 2006-10-11 |
EP1662032A1 (en) | 2006-05-31 |
WO2005024106A1 (en) | 2005-03-17 |
JP4015978B2 (en) | 2007-11-28 |
KR101025153B1 (en) | 2011-03-31 |
EP1662032B1 (en) | 2009-10-28 |
EP1662032A4 (en) | 2007-01-24 |
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